I understand it is widely used in ECU's, and ST has relationships with the major car manufacturers, and the likes of Delphi, Mopar, Bosch, Magneti Marelli, etc.
Details of these chips are rarely shared publicly, and considered proprietary.
This is primarily a user-to-user forum, and not a chipping scene forum.
If you want access to these materials you'll need to contact your local ST sales office, and make your case there.
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